US3847600A - High temperature alloy steel - Google Patents

High temperature alloy steel Download PDF

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Publication number
US3847600A
US3847600A US00358797A US35879773A US3847600A US 3847600 A US3847600 A US 3847600A US 00358797 A US00358797 A US 00358797A US 35879773 A US35879773 A US 35879773A US 3847600 A US3847600 A US 3847600A
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US
United States
Prior art keywords
high temperature
percent
alloy steel
steel
temperature alloy
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00358797A
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English (en)
Inventor
T Mimino
K Kinoshita
K Hattori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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Publication of US3847600A publication Critical patent/US3847600A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum

Definitions

  • the steel is an inexpensive ferrite steel having a composition comprising C up to 0.10 percent, Si up to 1%, MN 0.3 1.20 percent, Cr 7-10 percent, Mo 0.3-1.5 percent V 0.1- 0.3 percent, Nb 0.15 0.50 percent, B up to 0.012 percent, N up to 0.050 percent balance fe and incidental impurities.
  • This invention relates to a high temperature alloy steel, the alloy steel being an inexpensive ferrite high temperature steel having high creep rupture strength at temperatures up to about 650C and having superior weldability.
  • the present invention has been developed on the 2 cent provides a high temperature corrosion resistance up to 650C similar to that of 9% Cr-1% Mo ferrite alloy steel, and Mo addition of 0.3 to 1.5% Nb addition l of 0.15 to 0.50% and V addition of 0.1 to 0.3% form stable carbide and nitride at high temperature to improve high temperature strength.
  • This high temperature strength may be further improved by either individual or combined-addition of 0.001 0.012 percent boron and 0.015 -0.050 percent nitrogen in addition to the above listed alloying compositions.
  • Preferred high temperature alloy steel of the present invention consists essentially of the following elements in the following weight percentages:
  • the high temperature alloy steel of the present invention is characterized in that the maximum hardness of weld heat affected portions is so low that there is little possibility for low temperature cracking while welding. This excellent characteristic is due to the fact that C content is limited to less than 0.10 percent and is stabilized because of the combination of carbon into such carbides as NbC, VC and the like.
  • this invention has made an improvement in high temperature strength, hot forming properties, cold forming properties and weldability of a 9% Cr 1% Mo ferrite alloy steel.
  • the high temperature alloy steel of this invention transformation point ranging from 820C to 835C
  • compositions of the present alloy steel will be described in detail as follows: Cr addition of 7 to l0 perthus enabling tempering at a temperature of approximately 800C.
  • the above listed alloy steels containing carbides of Nb and V which are effective for creep rupture strength, easily obtain hardnesses of HV to by 30 minutes heating at a temperature of about 1,115C and tempering at a temperature of about 800C after air cooling, thus cold forming such as cold bending can be performed with ease.
  • Table 2 shows the comparison of the creep rupture strength between the completely annealed materials of this invention alloy steels listed hereinabove, after heat treatment, and 2.25% Cr- 1% Mo'steel, 5% Cr 0.5% Mo steel and 9% Cr-1% Mo steel, respectively.
  • the alloy steel of the present invention is useful in fields requiring operation at temperatures up to 650C and particularly for boilers, petroleum refining processes, general chemical industries, heat exchanger tubes of atomic furnaces and pipe line materials.
  • this invention provides a high temperature alloy steel fo the relatively inexpensive ferrite group having high creep rupture strength up to temperatures of about 650C being characterized in that the maximum hardness of weld heat affected portions is'low and therefore low temperature cracks are 5 unlikely to be caused while welding, thereby proving of great advantage in modern industries.
  • a high temperature alloy steel having high creep rupture strength up to temperatures of about 650 consisting essentially of the following elements in the following weight percentages:
  • the balance being iron and incidental impurities.
  • a high temperature alloy steel according to claim 1 containing 0.001 to 0.012 percent of boron.
  • a high temperature alloy steel according to claim 1 containing 0.015 to 0.050 percent of nitrogen.
  • a high temperature alloy steel according to claim 1 containing 0.001 to 0.012 percent of boron and 0.015 to 0.050% of nitrogen.
  • a high temperature alloy steel consisting essentially of the following elements in the following weight percentages.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
US00358797A 1969-08-27 1973-05-09 High temperature alloy steel Expired - Lifetime US3847600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44067174A JPS498765B1 (enrdf_load_stackoverflow) 1969-08-27 1969-08-27

Publications (1)

Publication Number Publication Date
US3847600A true US3847600A (en) 1974-11-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00358797A Expired - Lifetime US3847600A (en) 1969-08-27 1973-05-09 High temperature alloy steel

Country Status (9)

Country Link
US (1) US3847600A (enrdf_load_stackoverflow)
JP (1) JPS498765B1 (enrdf_load_stackoverflow)
CA (1) CA923735A (enrdf_load_stackoverflow)
CH (1) CH509414A (enrdf_load_stackoverflow)
DE (1) DE2042394A1 (enrdf_load_stackoverflow)
FR (1) FR2059330A5 (enrdf_load_stackoverflow)
GB (1) GB1290412A (enrdf_load_stackoverflow)
SE (1) SE352378B (enrdf_load_stackoverflow)
ZA (1) ZA705766B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035159A (en) * 1976-03-03 1977-07-12 Toyota Jidosha Kogyo Kabushiki Kaisha Iron-base sintered alloy for valve seat
US4047941A (en) * 1974-09-23 1977-09-13 Allegheny Ludlum Industries, Inc. Duplex ferrit IC-martensitic stainless steel
US4054448A (en) * 1974-09-23 1977-10-18 Allegheny Ludlum Industries, Inc. Duplex ferritic-martensitic stainless steel
US4078919A (en) * 1973-11-21 1978-03-14 Nippon Steel Corporation Ferritic stainless steel having excellent workability and high toughness
US4222771A (en) * 1973-02-28 1980-09-16 Mitsubishi Jukogyo Kabushiki Kaisha High chromium steel of mixed structure containing ferrite for high temperature use
US4266974A (en) * 1978-10-30 1981-05-12 Kawasaki Steel Corporation Alloy steel powder having excellent compressibility, moldability and heat-treatment property
FR2535235A1 (fr) * 1982-11-02 1984-05-04 Kobe Steel Ltd Fil ou baguette de soudure pour la soudure electrique a l'arc submerge d'aciers au chrome ou au molybdene
FR2585370A1 (fr) * 1985-07-25 1987-01-30 Nippon Kokan Kk Acier refractaire a 9 % de chrome
EP1329532A3 (en) * 1997-09-22 2003-07-30 National Research Institute For Metals Ferritic heat-resistant steel and method for producing it
FR2851774A1 (fr) * 2003-02-27 2004-09-03 Inst Francais Du Petrole Aciers faiblement allies anticokage a teneur accrue en silicium et en manganese, et leur utilisation dans des applications du raffinage et de la petrochimie

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184665A (ja) * 1984-02-29 1985-09-20 Kobe Steel Ltd 圧力容器用低合金鋼
JPH01268846A (ja) * 1988-04-20 1989-10-26 Kawasaki Steel Corp 熱間プレス工具用鋼
JP3027012B2 (ja) * 1990-12-28 2000-03-27 日新製鋼株式会社 耐食性および加工性に優れた高強度クロム含有鋼板
JPH0559498A (ja) * 1990-12-28 1993-03-09 Toyota Motor Corp フエライト系耐熱鋳鋼およびその製造方法
JP3027011B2 (ja) * 1990-12-28 2000-03-27 日新製鋼株式会社 耐食性および加工性に優れたクロム含有鋼板
DE19643752A1 (de) * 1996-10-23 1998-04-30 Abb Patent Gmbh Verfahren zur Herstellung eines Werkstoffs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109118A (en) * 1932-12-08 1938-02-22 Krupp Ag Manufacture of articles from steel alloys
US2572191A (en) * 1949-12-16 1951-10-23 Crucible Steel Co America Alloy steel having high strength at elevated temperature
US3044872A (en) * 1959-11-02 1962-07-17 North American Aviation Inc Steel alloy composition
US3201232A (en) * 1961-04-01 1965-08-17 Boehler & Co Ag Geb Use of steel involving prolonged stressing at elevated temperatures
US3290183A (en) * 1961-08-29 1966-12-06 Yawata Iron & Steel Co Method of producing anticorrosion high tensile strength rail
US3539338A (en) * 1966-06-28 1970-11-10 Nippon Kokan Kk High-temperature alloy steel containing cr and mo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109118A (en) * 1932-12-08 1938-02-22 Krupp Ag Manufacture of articles from steel alloys
US2572191A (en) * 1949-12-16 1951-10-23 Crucible Steel Co America Alloy steel having high strength at elevated temperature
US3044872A (en) * 1959-11-02 1962-07-17 North American Aviation Inc Steel alloy composition
US3201232A (en) * 1961-04-01 1965-08-17 Boehler & Co Ag Geb Use of steel involving prolonged stressing at elevated temperatures
US3290183A (en) * 1961-08-29 1966-12-06 Yawata Iron & Steel Co Method of producing anticorrosion high tensile strength rail
US3539338A (en) * 1966-06-28 1970-11-10 Nippon Kokan Kk High-temperature alloy steel containing cr and mo

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222771A (en) * 1973-02-28 1980-09-16 Mitsubishi Jukogyo Kabushiki Kaisha High chromium steel of mixed structure containing ferrite for high temperature use
US4078919A (en) * 1973-11-21 1978-03-14 Nippon Steel Corporation Ferritic stainless steel having excellent workability and high toughness
US4047941A (en) * 1974-09-23 1977-09-13 Allegheny Ludlum Industries, Inc. Duplex ferrit IC-martensitic stainless steel
US4054448A (en) * 1974-09-23 1977-10-18 Allegheny Ludlum Industries, Inc. Duplex ferritic-martensitic stainless steel
US4035159A (en) * 1976-03-03 1977-07-12 Toyota Jidosha Kogyo Kabushiki Kaisha Iron-base sintered alloy for valve seat
US4266974A (en) * 1978-10-30 1981-05-12 Kawasaki Steel Corporation Alloy steel powder having excellent compressibility, moldability and heat-treatment property
FR2535235A1 (fr) * 1982-11-02 1984-05-04 Kobe Steel Ltd Fil ou baguette de soudure pour la soudure electrique a l'arc submerge d'aciers au chrome ou au molybdene
US4561888A (en) * 1982-11-02 1985-12-31 Kabushiki Kaisha Kobe Seiko Sho Welding wire for use in submerged arc welding of Cr-Mo steels
FR2585370A1 (fr) * 1985-07-25 1987-01-30 Nippon Kokan Kk Acier refractaire a 9 % de chrome
EP1329532A3 (en) * 1997-09-22 2003-07-30 National Research Institute For Metals Ferritic heat-resistant steel and method for producing it
EP1329531A3 (en) * 1997-09-22 2003-07-30 National Research Institute For Metals Ferritic heat-resistant steel and method for producing it
FR2851774A1 (fr) * 2003-02-27 2004-09-03 Inst Francais Du Petrole Aciers faiblement allies anticokage a teneur accrue en silicium et en manganese, et leur utilisation dans des applications du raffinage et de la petrochimie
US7442264B2 (en) 2003-02-27 2008-10-28 Institute Francais Du Petrole Method of using low alloy anticoking steels with an increased silicon and manganese content in refining and petrochemicals applications

Also Published As

Publication number Publication date
CA923735A (en) 1973-04-03
SE352378B (enrdf_load_stackoverflow) 1972-12-27
FR2059330A5 (enrdf_load_stackoverflow) 1971-05-28
JPS498765B1 (enrdf_load_stackoverflow) 1974-02-28
ZA705766B (en) 1971-04-28
CH509414A (fr) 1971-06-30
DE2042394A1 (de) 1971-03-25
GB1290412A (enrdf_load_stackoverflow) 1972-09-27

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